> I had a feeling someone would bring up L2ARC/cache devices. This gives
> me the opportunity to ask something that's been on my mind for quite
> some time now:
>> Aside from the capacity different (e.g. 40GB vs. 1GB), is there a
> benefit to using a dedicated RAM disk (e.g. md(4)) to a pool for
> L2ARC/cache? The ZFS documentation explicitly states that cache
> device content is considered volatile.
Using a ramdisk as an L2ARC vdev doesn't make any sense at all. If you
have RAM to spare, it should be used by regular ARC.
- Sincerely,
Dan Naumov